<!DOCTYPE HTML>
<html>
<meta charset="utf-8">
<style>
div {
  font-family:monospace;
  width:200px;
  border:1px solid red;
  text-align-last:justify;
}
span {
  display:inline-block;
}
</style>
<!-- The <space> or <nbsp> characters that carry combining marks
     should NOT be stretched by justification. -->
<div>
<p><span>Hello &#x308; &#x308; &#x308;</span> world
<p><span>Hello&nbsp;&#x308;&nbsp;&#x308;&nbsp;&#x308;</span> world
<p><span>Hello&nbsp;&#x308;</span> <span>&nbsp;&#x301;&nbsp;&#x300;world</span>
<p><span>Hello&nbsp;&#x202d;&#x308;&#x202c;</span>‬ <span>&nbsp;&#x202d;&#x302;&#x202c;world</span>
